Gaolijie CR360 vs RJ-Bot G31: Kitchen Exhaust Duct Cleaning Robot Comparison 2026

Gaolijie CR360 vs RJ-Bot G31: Kitchen Exhaust Duct Cleaning Robot Comparison

Kitchen exhaust duct cleaning is the highest-stakes segment of the duct cleaning industry. NFPA 96 mandates regular cleaning, and inadequate cleaning is directly linked to restaurant kitchen fires. The Gaolijie CR360 and RJ-Bot G31 are both purpose-built grease duct cleaning robots — but they differ significantly in design philosophy, cleaning capability, and the level of compliance documentation they support.

Quick Comparison: CR360 vs G31

Specification	Gaolijie CR360	RJ-Bot G31	Notes
Price	$7,000-9,000	$3,200-3,300	G31 is significantly cheaper
Duct Diameter	200-800mm	≥280mm	CR360 handles smaller ducts
Water Jet Pressure	High-pressure industrial spray	2,900 PSI	G31 specs higher PSI
Waterproof Rating	Industrial-grade sealed	IP68	Both well-sealed
Camera System	Dual HD (front + rear)	Dual HD with IR	G31 has IR advantage
Control Range	Up to 30m	25m	CR360 reaches further
Mobility	Tracked with magnetic option	Magnetic wheels standard	Different approaches
Temperature Rating	Up to 60°C ambient	Standard (not specified)	CR360 handles hotter ducts
Water Heating	Compatible with hot water pressure washer	Hot water compatible	Both handle hot water
NFPA 96 Documentation	Included report templates	Not included	Major compliance difference

Detailed Analysis

1. Cleaning Effectiveness: Pressure vs. Coverage

The G31 advertises 2,900 PSI water jet pressure — impressive on paper. However, PSI at the nozzle is only one factor in cleaning effectiveness. The CR360's spray system prioritizes coverage: rotating spray heads that ensure complete 360-degree coverage of grease accumulation on all duct surfaces. In greasy kitchen exhaust ducts, missing a strip of grease on the top surface is a fire hazard — the CR360's spray pattern is engineered to prevent this.

Practical difference: Higher PSI (G31) is better for heavy, caked-on grease. Better coverage (CR360) is better for ensuring no grease is left behind — which is what fire marshals and insurers care about.

2. Mobility: Magnetic vs. Tracked

The G31 uses magnetic wheels as standard, which provide strong adhesion to steel duct surfaces — useful for vertical risers in kitchen exhaust systems. The CR360 uses a tracked crawler system with an optional magnetic track upgrade for vertical sections.

Advantage of magnetic wheels (G31): Better grip on vertical steel ducts without additional configuration.
Advantage of tracked system (CR360): Better performance on horizontal runs, transitions, and ducts with heavy grease accumulation where magnetic adhesion can be compromised by the grease layer between the magnet and the metal surface.

3. NFPA 96 Compliance Documentation

This is the single most important differentiator for commercial kitchen exhaust contractors. After cleaning a restaurant kitchen exhaust system, the contractor must provide documentation proving the cleaning was performed to NFPA 96 standards. This documentation is reviewed by:

• The restaurant's fire insurance provider
• The local fire marshal during inspections
• The restaurant's corporate compliance team (for chains)

The CR360 system includes NFPA 96-compliant before/after photo templates and a cleaning report format that satisfies these requirements. The G31 captures video but does not include structured compliance reporting templates — you will need to create your own documentation system.

4. Temperature Tolerance

Kitchen exhaust ducts retain heat from cooking operations. The CR360 is rated for ambient temperatures up to 60°C (140°F), which covers ducts that have not fully cooled since the last cooking cycle. This allows cleaning to begin sooner after the kitchen closes — a practical advantage when working within tight overnight cleaning windows at restaurants.

5. Control Range in Commercial Kitchens

The CR360's 30m control range versus the G31's 25m may seem minor, but in multi-story restaurant exhaust systems (common in mall food courts and hotel kitchens), those extra 5 meters mean reaching the roof exhaust fan from a ground-floor access point without relocating the control station.

ROI Analysis for Kitchen Exhaust Contractors

A typical restaurant kitchen exhaust cleaning contract pays $400-800 per hood, with most restaurants requiring cleaning every 3-6 months per NFPA 96. For a contractor servicing 6 restaurants per month:

Annual Impact	CR360	G31
Equipment cost (amortized over 3 years)	$2,333-3,000/year	$1,067-1,100/year
Revenue: 72 cleanings/year at $600 avg	$43,200	$43,200
Compliance doc time savings (10 min/job)	12 hours/year	0 (manual docs required)
Additional access point avoidance	~$1,500-3,000/year	Baseline
3-Year Total Cost of Ownership	$7,000-9,000	$3,200-3,300 + documentation system + extra access labor

The G31's lower price is compelling, but the CR360's compliance documentation features and longer working range deliver measurable operational savings that close the gap significantly over the equipment lifespan.

Recommendation

• Choose the G31 if: You clean single-story restaurants with short duct runs, your clients do not require formal NFPA 96 documentation, and your budget is under $4,000
• Choose the CR360 if: You clean multi-story or mall-based restaurants, your clients require NFPA 96 compliance reports for insurance, and you want the productivity advantage of 30m range and hot-duct capability

Cleaning commercial kitchens? Get the right equipment for NFPA 96 compliance. Contact Gaolijie for a CR360 specification sheet and sample NFPA 96 cleaning report template.